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2-Chloro-3-nitropyridin-4-ol

Also known as: 2-Chloro-3-nitro-4-pyridinol, 2-Chloro-3-nitro-4-hydroxypyridine, 2-Chloro-3-nitro-1H-pyridin-4-one, 4-Pyridinol, 2-chloro-3-nitro-

2-Chloro-3-nitropyridin-4-ol (CAS 629655-23-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3ClN2O3 and a molecular weight of 174.542 g/mol. Key properties include a boiling point of 408.2±40.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 200.7±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
629655-23-8
Jingsj CID
J-1515932-7
Molecular Formula
C5H3ClN2O3
Molecular Weight
174.542 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point408.2±40.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point200.7±27.3 °C
Exact Mass173.983215
PSA78.94000
LogP-0.18
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.637
Storage Conditions2-8°C

Customs & Trade Information

HS Code2933399090
Summary2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2-Chloro-3-nitropyridin-4-ol?

The CAS number of 2-Chloro-3-nitropyridin-4-ol is 629655-23-8.

What are the molecular formula and molecular weight of 2-Chloro-3-nitropyridin-4-ol?

2-Chloro-3-nitropyridin-4-ol has molecular formula C5H3ClN2O3 and molecular weight 174.542 g/mol.

What are the upstream and downstream products of 2-Chloro-3-nitropyridin-4-ol?

For 2-Chloro-3-nitropyridin-4-ol, Upstream Products: 2,4-Dichloro-3-nitropyridine, 2,4-Dihydroxy-3-nitropyridine; Downstream Products: 2-Amino-4-hydroxy-3-nitropyridine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2-Chloro-3-nitropyridin-4-ol (CAS 629655-23-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1515932-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.